1918.] the Birds of the Anglo-Egyptian Sudan. 661 



the Arabian and Somaliland examples in the British Museum 

 appear to belong to the latter form. 



Scarce in winter at Khartoum as compared with the 

 Lesser Whitethroat {A. L. B.). 



Sylvia simplex. 



Sylvia simplex Latham; B. O. U. List Bt. Bds. p. 66. 



Sylvia boriaborin (Bodd.) ; Hartert, Vog. pal. Faun. p. 582. 



Sylvia hortensis Bechst. ; Butler, Ibis, 1905, p. 335, 1908, 

 p. 231, 1909, p. 396. 



[B. coll.] 2 Khor Arbat May 4, R.S. : 3 Roseires 

 Sept. 13-15, Sen, ; 1 Khartoum Oct. 15. 



The Garden- Warbler is common on migration, especially 

 in spring ; it winters farther south. 



Sylvia riippelli. 



Sylvia riippelli Temm. ; Hartert, Vog. pal. Faun. p. 592 ; 

 Butler, Ibis, 1905, p. 335. 



[B. coll.] 2 Shendi Mch. 2, Ber. ; 3 Fatasha, W. of 

 Omdurman, Nov., 1 thirty miles west of Omdurman 

 Jan. Kh. 



Three of the birds are sexed females, and are without the 

 characteristic black cap, but show slight traces of black 

 feathers coming in on the crown. They are probably 

 young birds. 



Sylvia hortensis hortensis. 



Sylvia hortensis hortensis (Gmel.) ; Hartert, Vog. pal. 

 Faun. p. 580. 



Sylvia orphea auct. 



[B. coll.] 1 Shendi Mch. 1, Ber. 



Sylvia hortensis crassirostris. 



Sylvia hortensis crassirostris Cretzschm. ; Hartert, Vog. 

 pal. Faun. p. 581. 



[B. coll.] 1 Erkowit Apl. 3, 1 Gebeit Mch. 21, R.S. 

 [C. & L. coll.] 2 Sinkat Mch. 19, R.S. ; 3 Kamisa Dec. 

 Sen. 



